4. Royal Ontario Museum, Toronto
The ROM is Canada’s largest museum and houses more than six million objects, including a 90-foot-long baurosaurus, a 900-carat cerussite gem and a rare bust of Cleopatra VII. But the building itself is just as fascinating as what’s inside it. In 2007, the ROM opened the Lee-Chin Crystal designed by renowned architect Daniel Libeskind. The unusual, crystal-like design is said to have been inspired by the museum’s rock and gem collection. It stands adjacent to the ROM’s original building—first opened in 1914—and its impressive exterior is made of 75 per cent glass and 25 per cent brushed aluminum.